Fantasy: a Ghost Marriage Starts at the Beginning, and You Die Without Practicing Qi?

(No system + group portrait with multiple protagonists + slow pace + not brainless) (Qi training, foundation building, elixir formation, essence refining, Dharma form, corpse beheading) (spirits, gods, immortals, demons, devils, ghosts) "I... Successfully transformed into a spirit?" Deep in the cave, Xian Sheng froze on the spot, waiting for him to be happy that he had successfully transformed into a spirit and would have spiritual roots in the future. Then he noticed that a drop of water fell into his hand. "Is it raining?" He raised his head and looked up doubtfully. The slightly warm "raindrops" quietly flowed from his eyes, along his beautiful face, and dropped on his palms. "It's not raining, it's me." He stroked his wet cheek in surprise, opened his lips and teeth slightly, and asked himself. "But why do I cry..."